Exam 13: Mass Wasting

Heavy irrigation on a hillslope will cause __.

The type of material involved doesn't matter in how a mass wasting event is classified.

In a translational slide,the descending mass __.

A(n)apron of fallen rock fragments called ___ is generally found at the base of a slope affected by rockfall.

Mudflows frequently occur on young volcanoes covered with ash.

Mudflows are ___ likely to occur in arid regions than in wet climates.

A(n)_____ is the rapid sliding of a mass of bedrock along an inclined surface of weakness.

When soil is saturated with water ____ increases.

In cold climates freezing and thawing contribute to downslope soil movement.

_____ commonly trigger mass wasting events.

The Gros Ventre slide in 1925 generated a secondary hazard,namely __,whose failure was responsible for the destruction of the town of Kelly,Wyoming.

A(n)_____ is a general term that tells nothing about the processes involved.

Relief is a term used to describe the horizontal distance between valley floor and mountain top.

_____ is the flow of water-saturated soil over impermeable material.

Permafrost is __.

When soil is saturated with water it becomes heavier and less viscous and more likely to flow downslope.

Shear strength __.

A region with high relief (the distance between high and low points in an area)has a ______ rate of debris flow.

Mudflows generally contain __.

The rate of movement in creep is usually __.